heater hose

[john chalk]

hi all

there is a heater hose that goes from the water  pump to the heater tap. it appears there is a factory canal for this to follow but would appear to be a moulded hose needed there. I am just using normal heater hose that can not turn the 2 90 degree bends.  is this moulded hose available?

[john chalk]

thanks Tim... I have not done anything with this since writing this post.  the vacuum hoses are a challenge on their own.

[john chalk]

good one thanks Tony

[john chalk]

sorry to  be a pest - just confirming those 2 rear heater hoses can be straight 3/4 hose bent to suit?

[john chalk]

just revisiting to get an answer on the question about the 2 rear heater hoses. These are the ones right at the back that join into the firewall where I assume the heater cose is.

Can straight hose be used and just bent to suit?

[john chalk]

thats it jason good one.  so both heater hoses at the back of the engine that go in and out of the heater core can be straight hoses that can be bent?  the 90 degree hose at the front (the short one) I reckon I can get a local replacement.  thanks

[Jason Edge]

As an example of the Heater Core 3/4" Return hoses and pipe I have included picture below with intake removed. It starts with a 3/4" curved hose from Heater Core outlet nipped that curves over to the heater return pipe that mounts to Right Rear intake bolt via a metal flange (not seen in this picture) and goes under the intake on the right passenger, held to engine block via a 1/2" hex head bolt, then you have the short curved and formed 3/4" hose from the pipe to the water pump which I thought you were referring to. 

[Jason Edge]

The Heater Core "Feed" hose is a 5/8" hose and starts on nipple on the back of the cylinder head outlet pipe (sometimes called the water intake) curves over to the right and runs down the inside of the right valve cover, secured via a clamp, then connects to the hot water control valve.  From the hot water control valve, you have another 5/8" hose that curves over to the heater core inlet nipped. See Heater Core "Feed" hoses, and water control valve from a 1963 Cadillac outlined below. This is the same set as you have on the 64's except the heater control valve will look a little different. 

[john chalk]

that first pic did not come through but now I see it Jason. that is not the hose I mean. the hose goes from the heater tap then across the manifold to the connection near the fuel filter. its just a 3/4 inch heater hose.  it looks to me that it should pass alongside the insode of the drivers side rocker cover.   Ross that hose is the hose to replace the hose in the 2nd pic?

[john chalk]

thanks Jason w ill email and make a deal

[Jason Edge]

The water return pipe to water pump hose does have a very tight turn and is formed. I am not sure if anyone is reproducing it. I should have some VG used ones on hand for $10. Below is a nice used one I just shipped out to Bill Anderson who is restoring a Park Avenue for a chapter member. Perhaps you can use the 20522 to cross-reference it to some NOS stock, reproductions etc.

  I will also have the return pipe (pictures at bottom) that runs under the intake manifold for if you need one.  Email me at [e-mail] with ship to address.